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Table 3 Relative risks of developing any symptom correlated to various risk factors.

From: Small risk of developing symptomatic tick-borne diseases following a tick bite in the Netherlands

  Exposed individuals Any symptom Relative risk (95% CI) P value
>24 h 30/193 8/30 3.10 (1.43 - 6.75) 0.0092*
Borrelia 43/190 7/43 1.60 (0.70 - 3.66) 0.2841
Rickettsia 41/190 6/41 1.36 (0.57 - 3.26) 0.5809
Ehrlichia 27/182 4/27 1.44 (0.52 - 3.97) 0.5059
Babesia 26/190 2/26 0.63 (0.16 - 2.54) 0.7439
Any infection 98/190 14/98 1.64 (0.72 - 3.73) 0.2625
  1. Relative risks were calculated by dividing incidence rates of exposed by incidence rates of unexposed participants. Confidence intervals and p-values were calculated using Fisher's exact test. P-values below 0.05 (*) were regarded as significant.